<script setup>
import { getCategoryFilterAPI,getSubCategoryAPI } from '@/api/layout'
import { ref, onMounted ,watch} from 'vue'
import { useRoute, useRouter } from 'vue-router'

const route = useRoute()
const router = useRouter()

const filter = ref({})
const getCategoryFilter = async (id = route.params.id) => {
    const { data: res } = await getCategoryFilterAPI(id)
    if (res.code !== '1') return ElMessage.error(res.msg);
    filter.value = res.result
}
onMounted(() => {
    getCategoryFilter()
})

const gotoParent = () => {
    router.push(`/layout/category/${filter.value.parentId}`)
}

//获取列表数据
const goodList = ref([])
const reqData = ref({
    categoryId: route.params.id,
    page: 1,
    pageSize: 20,
    sortField: 'publishTime'
})
const pages = ref(0)
const getSubCategory = async () =>{
    const {data:res} = await getSubCategoryAPI(reqData.value)
    if(res.code !== '1') return ElMessage.error(res.msg)
    // console.log(res.result);
    goodList.value.push(...res.result.items)
    pages.value = res.result.pages
}

onMounted(()=>{
    getSubCategory()
})

const tabChange = ()=>{
    reqData.value.page = 1
    goodList.value = []
    getSubCategory()
}


const disabled = ref(false)
//加载更多
const load =  async() =>{
    //获取下一页的数据
    reqData.value.page++
    getSubCategory()
    //加载完毕，停止更新
    if(reqData.value.page >= pages.value){
        reqData.value.page = pages.value
        disabled.value = true
    }
}

</script>

<template>
    <div class="container ">
        <!-- 面包屑 -->
        <div class="bread-container">
            <el-breadcrumb separator=">">
                <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
                <el-breadcrumb-item @click="gotoParent">{{ filter.parentName }}</el-breadcrumb-item>
                <el-breadcrumb-item>{{ filter.name }}</el-breadcrumb-item>
            </el-breadcrumb>
        </div>
        <div class="sub-container">
            <el-tabs v-model="reqData.sortField"  @tab-change="tabChange" :infinite-scroll-disabled="disabled">
                <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
                <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
                <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
            </el-tabs>
            <div class="body" v-infinite-scroll="load">
                <!-- 商品列表-->
                <GoodsItem v-for="item in goodList" :key="item.id" :good="item"/>
            </div>
        </div>
    </div>
</template>



<style lang="scss" scoped>
.bread-container {
    padding: 25px 0;
    color: #666;
}

.sub-container {
    padding: 20px 10px;
    background-color: #fff;

    .body {
        display: flex;
        flex-wrap: wrap;
        padding: 0 10px;
    }

    .goods-item {
        display: block;
        width: 220px;
        margin-right: 20px;
        padding: 20px 30px;
        text-align: center;

        img {
            width: 160px;
            height: 160px;
        }

        p {
            padding-top: 10px;
        }

        .name {
            font-size: 16px;
        }

        .desc {
            color: #999;
            height: 29px;
        }

        .price {
            color: $priceColor;
            font-size: 20px;
        }
    }

    .pagination-container {
        margin-top: 20px;
        display: flex;
        justify-content: center;
    }


}
</style>